They may be small in size, but the 5-kilowatt HelioVolt solar installations recently deployed at three DOE Regional Test Centers (RTCs) represent a big step for the photovoltaic (PV) industry. As the first three PV arrays to be tested under the SunShot Technical Assistance program, these solar energy systems kick-start a multi-year Energy Department-sponsored effort to develop standards for validating and monitoring promising new solar technologies. More Learn more about HelioVolt